Apparatus for making sealed packages



hily 5, 1938. s. BERGSTEIN 2,122,510

APPARATUS FOR MAKING SEALED PACKAGES Filed Oct. 8, 1935 7 Sheets-Sheet 1July 5, 1938. s. BERGSTEIN APPARATUS FOR MAKING SEALED PACKAGES FiledOct. 8. 1935 7 Sheets-Sheet 2 IN VENT OR.

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ATTORNEYS.

S. BERGSTEIN July 5', 1938.

APPARATUS FOR MAKING SEALED PACKAGES Filed Oct. 8, 1935 '7 Sheets-Sheet5 ATTORNEYS.'

July 5, 1938. s. EERGSTEIN 2,122,510

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Patented July 5,- 1,938

PATENT .o1-FICE APPARATUS FOR MAKING SEALED PACKAGES Samuel Bergstein,Cincinnati, Ohio, assignor to Edna May Bergstein and Robert MorrisBergstein, as trustees Application October 8,

12 Claims.

This invention relates to machines `for hermetically sealing packagessubsequent to the setting up, filling and sealing of the packages in theregular manner.

This application relates to improved mechanism for hermetically sealingypackages in accordance with the method set forth in my copendingapplication, Ser. No. 603,064, -illed April 4th, 1932, and is acontinuation in part thereof, and a division in so far as one type ofsealing apparatus shownl hereinis transferred from said copendingapplication.

My invention relates to mechanism and apparatus for sealing cartonsafter they are set up, filled and sealed as an auxiliary andsupplemental hermetic sealing operation. Such cartons are made, filledand closed by automatic machinery, a well known example being a cartonin which the blank is folded and secured in tubular form, with fourlateral walls, each having a flap at each end, two opposite flaps beingfolded in,

a third flap having adhesive applied to its lower side'being folded inon the two flaps, and the fourth flap having adhesive applied to itslower side and being folded in on the third flap to form each end of thecarton. In the ordinary method one end thus is formed, the carton isfilled, and

. then the other end is formed, completing the closure. My improvedmechanism is adapted for use, however, on all types of cartons,regardless of the machinery used prior to the hermetic sealingoperation. This usual method of sealing is adequate Where the ycontentsare of a nature which will not result in their seeping or siftingthrough minute openings, and where hermetic sealing is not required. Itis well known to those familiar with-the art of making paper boardcartons that although the paper board itself may be rendered impermeableby use of cellulose acetate or other substance, a carton made of suchmaterial is itself not impermeable nor air-tight. This is because of theever .present difficulty of sealing the end flaps without crevices and'pin holes which communicate with the interior of `the carton and renderit unfit for use as a container for many substances, such as foods,etc.,

wherein deterioration of quality or flavor results from exposure to air.

It is therefore an object of my invention to provide mechanism forapplying a coating or film of sealing medium to the hermeticallycritical portions of the carton, usually the corners of the sealed endflaps. A further object is to provide means whereby this sealing of thecartons may be accomplished by automatic apparatus, per- 1935, SerialNo. 44,082

(Cl. .9L-51) forming the' operation i n a rapid, neat and efficientmanner and requiring a minimum of attention by the operator.

Another object is the provision of hermetic sealing apparatus, withwhich cartons which are to receive this auxiliary hermetic sealingtreatment are carried on a conveyor belt in which ther apparatus forapplying the hermetic sealing treatment is more effective if the cartonsare properly positioned and spaced on the conveyor, and to automaticmechanism for spacing, feeding and positioning the cartons on theconveyor.

A further object is the provision of hermetic edge-sealing mechanismhaving auxiliary mechanism effective on theside ofthe carton oppositethat on which the hermetic ,sealing medium is applied for co-operatingwith said first noted mechanism for insuring a proper application of thesealing medium. l

Other objects and advantages will appear from a description of theinvention in conjunction with the drawings, wherein:

Figure 1 is a fragmentary-perspective view of a carton showing one ofthe hermetically critical edges.

Fig. 2. is a side elevation of my preferred machine with parts brokenaway and certain parts shown in section.

y Fig. 3 is a fragmentary plan view showing the arrangement of drivingmechanism.

Fig. 4 is an enlarged sectional plan view taken along the line 4-4 ofFig. 2.

Fig. 4a is a plan view of a sealing roller.

Fig. 5 is a left end` elevation with parts broken away-and certain partsshown in section.

Fig. 5a is a section along the line Sa-Sa of Fig. 5.

Fig. 6 is a fragmentary section along the line 6 6 of Fig. 2.

Fig. 7 is a fragmentary perspective view of a carton passing through mymachine.

Fig. 8 is a sectional view taken through one ofthe arms of my device forinverting the cartons.

Fig. 9 is an enlarged fragmentary section of a carton towhich thesealing medium has been applied.

Fig.. 10 is a side elevation of a modified form of my apparatus.

Fig. 11 is a section along the line II-II of Fig. 10.

Fig. 12 is a section along the line I2|2 of Fig. 10 and,

' Fig. 13 is a perspective view of apparatus'for ychine consistsessentially of a feeding or loading device generally indicated by theumeral I, for feeding the cartons in timed relation to an upper conveyorindicated at 2, a turn-over or inverting device 3 for linverting andplacing the' cartons on a lower conveyor 4, and a series of rollersadjacent the conveyors for applying the sealing medium, said rollersbeing indicated at 5a, 5b, 5c, and 5d, in the sequence in which theyperform their respective function upon a carton. A1-

though not an essential part of my invention, I,

have shown a third or take-off conveyor generally indicated at 6 forreceiving the finished cartons and carrying them to a packing table orstore room. `These devices, together with suitable supporting means anddriving mechanism by which they `are operated in coordinatedrelationship,

comprise my preferred form of machine as shown in Figs. 2 to 8,inclusive.

Feeding mechanism Asseen in Figs. 4 and 5, the feeding device has a pairof continuously running belts 8 and 9v arranged, to receive cartons froma 4conveyor or.

other source 1. The lower belt 8 is driyen from pulley 8a, fixed toshaft I0, which has journaled bearings in a pair of side plates I2 andI2a, and and has fixed at its outer end a driven gear II.

Belt 8 also runs over adjustable idler pulleys 8b,r which as seen inFig. 5a, are rotatably mounted on sleeves I3 held between the sideplates I2 and I2a by bolts I3a and nuts I3b, said bolts extendingthrough adjustment slots I 2b of the side plates. The side plates haveportions I2c, which extend above the surface ofthe belt 8 forming aguideway for the cartons. Also aflixed to the side plates a pair ofrails I4 and I4a extend beyond the limits of belt 8 to support thecartons during vtheir travel from source 1 onto belt 8 and from belt 8onto upper conveyor 2. The side plate I2 is supported by bolting to thefiange 52b extending from the upright frame member A52. Side lplate I2ais supported by bolting 'to upright member 14. Suitable spacing membersor blocks I2d may be interposed between'the side plates for holding themin rigid fixed relation.

Fixed to shaft I5 pulley 9a drives the upper belt 9 running over idlerpulleys 9b. The shaft I5 is journaled in side plates I6 and I6a, and hasa. driven sprocket I1 :fixed at one end. Plates I6 and I6a are supportedby members I8 and I8a,

which extend from the lower plates I2 and I2a. Plate I6 is alsovsupported atits inner end by the member I9, while plate I6 is givenadditional support by bolting to the upright frame member 114. Slots I6bpermit adjustment of the pulleys f 9b, which are mounted in the manneralready 'end of shaft 20, lever. arm 25 is -operably connected by link26 to a similar lever arm 21 xed to shaft 2|. I 28 meshes with a rack 29arranged to reciprocate in suitable guiding means 29a. The rack 29 isattached to a twisted bar 30, which, in turn, is

' pivotally connected vtoa lever arm 3| fastened to the lower end of ashort shaft 32 journaled 'in Also xed to shaft 2I, pinion gearv bearingbracket 33, and having lever arm 34 fastened at its upper end. It willbe thusl understood that movement of lever arm 34 will result inrotation of the shafts 2li and 2l with the'gates 23 and theiroutward'extending arms 24. y i

Clamped to the vertical shaft 35, a pair o collars 35a carry arms orfingers 36, having curved end portions 36a. The shaft 35 is journaled inbearing brackets 31 and 31a and has Afixed at its upper end aspu'r gear38 meshing with gear 38a.l fixed to' shaft 39, which is journaled inbearing bracket 31a and has at its upper end a miter gear40 meshing withmiter gearl 40a, fixed toshaft I5.

The feed mechanism is driven from a miter.

gear 42, is the gear II on shaft I0, which has' pulley 8a todrive belt8.

Referring to Fig. 4, the cartons entering the device between belts 8 and8 will be retarded by the gates 23, and as the upper belt 9 is notarranged to definitely` contact the-cartons at this po'int they willrest upon belt 8 which will continue t0 travel or slide beneath them inreadiness to carry the cartons forward when the gates are opened. Whenone of the studs 44, carried by the upper conveyor 2, contact lever arm34, it is carried to the right to eect movement of the gates 23 and arms24 which are arranged to travel throughan arc of approximately 90degrees. IIfhus the gats 23 will be at right angles to the positionshown,

and-will permit passage of the'rst awaiting carton. The second awaitinglcarton is not permitted to pass because f the action of arms 24 whichrevolve with the gates and grasp the said 34. 'With this arrangement,one carton will be released witheach operation of the gates, and

each carton will be in timed relation with belts Brand 9`for properentry upon the conveyor 2. The fingers 36 rotate in counter-clockwisedi- -rection and in timed relation with conveyor 2 for insuring properloading of the cartons thereshown after ther 'studs 44 have releasedlever arm on. If for any reason a cartonis late in its travel along the,belts 8 and 9, it will be contacted by the portion 36a of the fingers,which,

suicient to correct the inaccuracy of timing. The fingers also serve toassist the cartons completely onto the conveyor. .1

, Upper conveyor Referring to-Figs. 2 and 4, a front frame member 5I!and rear frame member 58a are held in fixed relation by tran sversemembers h'. Se-

.beingpositively driven, will advance the -carton cured at the left endof the frame members a 'ance for the sealing rollers.

over a left-hand sprocket 59 fixed on shaft 53. As best seen in Fig. 6,the chain 58 isof the type having at desired intervals special sideplates formed with extending lugs or ears 58a, to which are fastened byscrews or bolts a series of flat rectangular conveyor plates 60, havinga portion of their outer edges milled away to form tongues 60a. To eachalternate conveyor plate, I provide two upright pieces 6|, and on theunderside of these same lalternate plates, a stud 44 projects downwardlyto effect timed operation of the feed mechanism as already described.

During its travel between left-hand sprocket 59 and right-hand sprocket51, the conveyor assembly is carried in alignment by side guides 62 and63, which arel of channel-shaped cross section, and provide sliding tfor the tongues 60a of the conveyor plates. As shown in Fig. 6, theguides 62 and 63 may be supported by attaching with screws 64 tosuitable supports 65, which are held by screws 65a to transverse bars orbeams 66, these beams having at their outer` ends clamping ,means 66afor fastening to the frame -members or rails 61 and 68.

The chief function of this upper conveyor is to transport the cartonspast the rollers 5a and 5b which, as later described, apply my sealingmedium to the two lower edges a and b, as seen in Fig. 5. Whiletraveling on thisconvey'or, the

cartons rest upon the platesl 60 and are carried forward by the uprights6|. Also, the conveyor assemblyis somewhat narrower than the width ofthe cartons so as to provide necessary clear- Side guides 69 and 10 areprovided for guiding the cartons in alignment with the conveyor andsealing rolls, and as seen in Fig. 6, these guides are supported fromthe bent rods 69a and 10a depending from transverse" bars 1|, which haveat their outer ends clamping means 1|a for securing to longitudinalframe members 12 and 13. Member 12 is fastened at its .left endby screwsto the upper end 5|b of the upright 5|; at its right end it is fastenedto a similar extension (not shown) of the upright 54. Member 13 isattached at its right end by screws to upperfend 55h of upright 55 andat its left end to the upright 14. An adjustable pressure bar 15 isarranged to bear Vagainst the tops of the cartons and prevent verticaldisplacement when they contact the sealing rollers 5 and 5a.

For driving this upper conveyor a sprocket `16 is fixed to shaft 56 andcarries chain 16a, running over small sprocket 11 mounted oncountershaft 18. Countershaft 18 is journaled in multiple bearingbrackets 19 and 80, and has a xed bevel gear 18a, from'which it isdriven by motor 8|, acting through reduction unit 82, gears 82a and 83,shaft 83a and miter gear 84.

Movement of the conveyor chain 58 causes rotation of left-handv sprocket59 and shaft 53 which, as already described, has fixed thereon bevelgear 4| for driving the feed mechanism.

Inverting mechanism Fixedly rotating with the shaft 56,' wheels 86 and81 have spurs 88 arranged in pairs as] shown in Fig. 2. spurs, pins 89provide pivoted bearings for the arms 90. Referring to Fig. 8, the armsare o1' round stock upon which cam rollers 9| are rotatably mountedbetween collars 9 a fixed by pins 9|b. The arms have fiattened endportions 90a and 90b. Plates 92, having lugs 92a, are clamped by bolts92h to the ends- 90b of the arms. Pads Extending through each pair ofthey 93 of resilient material such as soft rubber are fastened to theplates. Springs 94, fastened to the wheels by screws 94a, tend to holdthe arms 90 in their extreme outward position, which is limited by pins88a mounted in the spurs 88.

Referring to Figs. 2 and 4, a pair of cam plates or tracks 95 and 96,approximately semi-circular in shape and supported by studs 91, from theuprights 54 and 55, are adapted to engage the cam rollers 9|, moving andholding the arms 90 inward during the engagement of the rollers with thefaces 95a and 96a of the cam tracks. Thus with the rotation of shaft 56,the arms 90 are moved in and out so as to grasp the cartons riding onthe upper conveyor and carry them in a semi-circular path. The arms arethen released by the cam plates -and the cartons are free to travel in arelatively inverted position on the lower conveyor 4. Y

Lower conveyor Secured to the lower ends of uprights 54 and 55, bearingblocks and |0| have journaled therein shaft |02, to which is xed asprocket |03 carrying chain |04, said chain being of the block type, andhaving aflxed at desired intervals upstanding pins or studs |05. Bearingblocks |06 and |01, mounted on left-hand uprights 5| and 52, havejournaled therein shaft |08 upon' which sprocket |09 is fixed for.driving chain |04;

As seen in Fig. 5, the shaft |08 has fixed at its right end a gear ||0,driven by gear xed With sprocket I2 to rotate on a stud ||3 secured inbearing block |06. The sprocket. I I2 is driven by chain ||4, runningover a larger sprocket fixed to shaft 53, which itself is driven aspreviously explained.

In its travel from right-hand sprocket |03 to left-hand sprocket lus,the chain |04 is hem in alignment by a channel or guide ||6, which maybe supported in any convenient manner, as by bracketsorbeams 1, whichspan the frame members 50 and 50a and are secured thereto at their outerends.

Referring to Figs. 2 and 5, the studs |05 of chain |04 are adapted toengage the cartons and carry them to the left, past sealing rollers 5cTake-01T conveyor As seen in Fig. 2, the completely sealed. cartonsleave the machine at the left end of the lower conveyor. Here they maybe received by a third or take-off conveyor to carry them to a packingtable or other desired 1ocation.

The take-off conveyorv chain |25, having uprights |26, is driven bysprocket |21, xed on shaft |28, which is journaled in a pair of bracketsor arms |29 extending from the frame members 50 and 50a. Fixed to shaft|28, a gear |30 meshes with gear |3|, which, in turn, is xd to a stubshaft |32, having at its outer end a sprocket |33 carrying chain |34,which is driven from a larger sprocket |35. As best seen in Fig. 5, thesprocket |35 is fixed to shaft 53, the driving means for which has beenpreviously described.

During their travel from the lower conveyor onto the take-ofi conveyor,the cartons ride or slide upon a pair of rails |36, being carried alongby the members 6| of the upper conveyor assembly. v

:Sealing rollers and appurtenances thereof As before stated, thehermetically critical portions of a carton are at the-edges of theoverlapped end flaps. Referring to Fig. l, the `critical edge a isforme-:i by three end flaps e, f and .g continuous, respectively, withside walis E, F, and G.

I prefer to rotate the sealing rollers at a speed nearly sufficient tothrow the sealing medium therefrom by the centrifugal force developed.Also,my'sea1ing medium is of relatively extra heavy consistency. Thuswhen I bring one ci' the critical edges of a carton into contact withthe surface of a roller, the sealing medium thereon is, in addition tobeing wiped from the roller, actually pushed and forced by its ownmomentum into whatever crevices or pin holes the carton may present. Asseen in'Fig. '1, the critical edge a is in contact with sealing roller aso that sealing medium thereon is' transferred to the carton and forcedinto the crevices as shown in Fig. 9. Here the adhesive used intheprimary sealing of the end ilaps is indicated at'P and my secondary orauxiliary sealing medium is shown at S entering and sealing the crevicea', which, if not closed, may permit leakage communicating vwith otherlcrevices which, in turn, lead to the in- |52 are employed to contactthe sealed edge of the passing carton and `wipe any surplus of sealingmedium therefrom. Similar means |53, may also be utilized for secondarywiping so that any remaining surplus is completely removed to assistrapid drying of the sealed edge.

Referring to Figs. 3 and 4, the countershaft/ 18 already described, hasfixed thereon miter gears 18a and 18h, driving gears i 55 and |56,respectively. Gear |55 is fixed to shaft |51, which is sprocket |50c.

journaled in the multiple bearing bracket 19,` and other bearingbrackets i51a and |51b xed to the upright frame members 55 and 52,respeetively. Fixed to shaft |51, the large sprocket |58a drives chain|59a running overanupper and smaller sprocket |60a iixedrvith sealingroller 5a on its shaft |6Ia. Also xedto shaft |51,sprocket |58d carrieschain |58d running over lower sprocket |60d fixed with sealing roller 5don Ashaft |6|d. Driven by miter gear 18e on countershaft 18,- the mitergear |56 is fixed to shaft |62, which is journaled in the multiplebearing bracket 30 and other bearing brackets |624 and |6211 fixed toupright frame members 5e4 and 5|, re-

spectively. Shaft |62 has iixed thereon sprocket `|5017, with chain |591for driving sprocket |60b fixed on shaft |6|o with sealing/roller 5b.The

sealing roller 5c is driven in like manner by sprocket i58c. and chain|59c running over 4a and 6, the sealing roller |6|a journaled in endwalls Referring to Figs. 5a ls fixed on shaft |65 and |86 of a reservoiror tank |51, which contains the sealing medium S and is mounted on the'members 66 already described. A doctor blade |68, having extended-endportions |68a and an lupturned lin-68 with slot |69a, is held in desiredrelation to the roller by screws |10. Slots |1|, through which thescrews extend, alle-W adjustment of the doctor blade by means of thethumb screw |12 arranged as shown to enter the fixedl nut |13. A spout|14 is provided for yfilling the tank.

Tank |61 has an outwardly turned lip |61a, in which a Wiper blade |15 offiat-spring material is mounted and arranged to Wipe surplus sealingmedium `from the bottom ofthe cartons. A similar .pair of blades |16 arefixed on the piece i11 for wiping the side of the cartons. The blades|15 and |16 comprise the primary wiping means |52 before mentioned, andmaterial here scraped from the cartons runs back into the tank.Extending from' the tank a braeket |18 has an upstanding member orpost.|19 from which additional scraper blades |80 and |8| are mounted toform the secondary wiping means |53 before mentioned. Material herescraped from the cartons may be'reclaimed by use of v`drip pans notshown in the drawings.

The guard |5| has blade |83 of iight spring f material bent as at |83aand fastened by rivets |83b -to the angle bar |84, said angle bar beinglthreaded to receive screws |84a .by which it is adjustably xed in slots|8511l of the angle bar |85. Angle bar |85 also has adjusting slots|85b,

. through which screws |850 extend to clamp the assembly to the cartonguide rail 10.

ri-he springvpressure means |50 consists of a series of 4fiat springs|86 riveted to a member |81,

`having an angular bent lug 81a threaded to rev vceive screws |811),said screws being adjustably xed to bracket |88 by means of slots |880.The bracket |88 may be mounted by screws |882) to carton guide rail 69.

i The appurtenances of the sealing roller 5a asv top transverselylaligned bearings 202 near respective ends, for shafts 203 and 204, eachhaving fixed on it a pair of transversely spaced sprocket wheels 205.Shaft 203 extends past its rear bearing 202 with a large grooved pulley206 and a small grooved pulley 201 fixed `on its extension; the latterpulley 201 having a belt 208 through which the machine ls driven from asuitable source of power, not shown. The table has a slot 20|b for thesepulleys 206 and 201 and belt 208, and has slots 20|c for the sprocketwheels 205; The other shaft 204 extends to the rear of its rear bearing202 and has fixed on its extension the bevel gear 208, for which thetable has a, slot 20|d. l

Sprocket chains 2|. nm on the wheels 205, each having aseries of lugs 2|and a bed bar 2|2 lies between the wheels 205 and between the chains 2i0 and extends past them at both ends;

being fixed to a bottom plate 2|3 by screws 2M. Qhannels 2| 5 also arescrewed to this piate 2| 3 to guide the chains 2|0. The bottom plate 2|3 has legs 2|6..extending down, with vertical slots ing lockriuts 222.

Back guides 223 are supported on posts 224to extend along to the rear ofthe chains 2|0; the

posts 224 having lower extensions under the bed bar 2|2, to which theyare secured by screws 225.

Y These back guides 223 extend the full length of the machine. The frontguides 226 are similarly mounted by posts 221 secured to the bed bar 2|2by screws 228; these front guides 226 extending from the left end ofthe' machine in front of the chains 2|0 and terminating near the righthand sprocket wheels 205, leaving a space for placing the cartons ontothe bed bar 2|2 in the paths ofthe chain lugs 2| to be pulled betweenthe guides 223 and 226 in proper alignment.

Four standards 229 are fixed to the table two at its rear and two at itsfront edge, in two pairs aligned from front to rear, each pair havingjournaled in it'a shaft 230 and each shaft 230 having fixed on it a drum23 The pressure belt 232 runs around these drums 23| over the chains2|0. The left hand shaft 230 has xed on it a grooved pulley 233, and abelt 234 runs around this pulley 233 and around theY large pulley 206that is fixed on the sprocket wheel shaft 203 as before described. Eachstandard 229 has pivoted on it below the shaft 30 a pressure arm 235;each pair of arms 235 journaling a pressure roller 235 which is pulleddown against the lower stretch of the pressure belt 232 by springs 231,one of which is stretched from each arm 235 down to a lower part of therespective standard 229. With the chains 2|0 and bed bar 2|2 adjusted toproper height by the means above described, thepressure belt 232 holds.the cartons firmly thereon.

Midway between the two pairs of sprocket wheels 205, reservoirs 238 arefixed to the table by foot extensions 238a, one reservoir at the frontand the other at the rear of the chains 2|0. Each reservoir 238 has aspout-like extension 239 on its left side next to its top, and on itsside next to the chain 2|0 has a boss 240 next to its bottom, and on itsouter side, away from ther disks 243 are operatively connected forrotation of each disk over toward the chains 2|0. At the rear, a spurpinion 248 meshes with the disk gear other end of the shaft 249 is thebevel pinion |y 245 and is fixed on a shaft 24.9 journaled inI bearings250 xed on the table 20|. Fixed on the in mesh with the bevel gear 209-of the right hand sprocket wheel shaft 204, and before mentioned,which, driven by the chains 2|0 from the left hand shaft 203, drivesthev disks 243 in the proper directions as above explained.

For each disk 243 a scraper blade .252 extends in through the reservoirwall slot 242, being forked at its inner end to straddle the peripheryof the disk, and having its outer end part bent up and straddling anadjusting screw 253 between collars 254 fixed on the screw, the screwbeing 4threaded through the ear 24| on the reservoir rim. On the leftside of the top of each reservoir 238 is .screwed a horizontal plate 255extending in over the spout extension 239 and having xed on its innerend two scrapers 256 and 251, extending in past the inner end of theplate 255 past the periphery of the disk 243. A third scraper 258 isfixed in the left or outer end of the spout extension` 239 and extendsup therefrom and inward past the ends of the other two Scrapers 256 and251. The latter incline to the left, in the direction of conveyance ofthe cartons, and the left hand one, 251, is vnarrower and does notproject up as far as the right hand one 256. These two Scrapers 256 andl251 are ordinarily required because the closure flaps are often slightlyinclined from parallelism with the walls of the carton. If there wasonly one scraper it might be held` away from the end wall by the edge ofthe closure iiap so an extra scraper spaced slightly above the edge ofthe closure flap is ordinarily required. A third scraper 758 scrapes thebottom of the container. Material scraped from the carton runs back intothe spout extension 239. 'Ihe blade 252 is adjusted to control theamount of material carried up on the disk 243. Where the foot extensions238a of the reservoirs are screwed to the table, they have front to rearslots 2381) for the screws, so that each reservoir 238 ment of the chainlugs 2| l, and as held down by.

the pressure belt 232, as before described.

Operating in this manner, the part of the lateral side of the carton Ascrapes from the peripheryof the disk 243 a portion of the material Bcarried thereby, first taking some of this material B onto the advancedside of the corner a at the meeting of the bottom b, transverse side cand lateral side d. This material also covers the edge e of the jointsbetween the carton flaps, and the nal portion scraped from the disk 243protrudes slightly past the opposite corner f at the meeting of thebottom b, opposite transverse side g and the lateral side d; TheScrapers 256 and 258 scrape all but a thin coating of the material fromthe bottom b and side d, res'pectively, and,

the narrower intermediate scraper 251 bears its upper corner to thecarton corner a, then along the joint edge e, and finally springs inwardpast the following corner f. It thus distributes the material around thecorners a and f, and the protrusion of the material into the smallopenings at these corners, before mentioned, is insured by the pressureof the scraper 251,' which ,also better scrapes the slight yrecess alongthe joint edge e to remove material that might have gathered therein tocome therefrom after the carton has left the Scrapers. It will be seenthat the two reservoir devices thus operate on the two lower lateraledge parts of a carton simultaneously, completing the final sealing ofthat end of the carton as it is carried along.

This operation may be upon the bottom of an open-topped carton eitherbefore or after the carton has received its contents; or the carton mayhave been filled and hadr its top also closed before coming to myapparatus. After this operation upon one end, therefore, it passes tothe left hand end of the bed bar v2|2, from which it may passto thelling device if it was empty, or

if lled but not closed, to the closing device which- A folds -andsecures the top aps.' If-passed to a filler, it then passes to the topclosing device. In

either case, after its top is closed and adhesively secured by suchdevice, the carton may be re- 1 \`turned to my device, inverted, andthereupon have this other -end subjected to the above describedoperations according to my method; or another set of my apparatus may bearranged to receive the inverted carton from the final closingvdevice-to repeat the operations on this other end.

If the carton is to be completely closed and hermetically sealed forfilling by an air exclusion `process as before referred to, it has bothof its ends subjected to my process in the manner described, uponcoming'from the device that lcloses`its two ends. The material B usedfrom examples shown, but`what I claim as new and desire to secure byLetters Patent, is:-

1. Apparatus for sealing cartons comprising a sealing fluid vliquidsupply'holder, a disc rotating in said holder to carry fluid on itsperiphery out of said holder, and a conveyor movable in a plane parallelwith. the axis of said disc for carrying cartons past said discwiththeir lower corners sufliciently close to saidperiphery to receive aportion -of the sealing fluid therefrom.

2. Apparatus lfor sealing cartons comprising a holder forsealing fluid,a conveyor for carrying cartons with respect to. said holder so that acorner of eachcarton passes in contact with a portion 'of the fluid,scrapers independently movable-and in the paths of the respectivelsurfaces' of -the carton adjacent tosaid corner, :and 'a third scrapermovable independently of the other ,two scrapers and in the path of saidcorner.

3. A machine .for hermetically`sea1ing crevices in closedcartonsoccurringy along the 'meeting edges of closure flaps of saidcartons, which com- Prisesymeans for moving cartons in a directionparallel with the edges thereof, and mechanical means for forcing asealing medium crosswise of said edges into said crevices during themovement thereof, and means for restricting the forcing of lthe sealingmedium exclusively.to 'said edges.

vi. A.v machine for hermetically sealing crevices' .in closed cartonsoccurringalong the meeting edgesof .closure naps of said cartons, whichcomprises meansfor moving cartons in a direction parallel with the edgesthereof, and mechanical means for forcing a sealing medium crosswise ofvsaid edges into said crevices during the move- I ment thereof, meansfor Arestricting the forcing for applying plugging and sealing mediuminto the crevices during the movement thereof. and

means for diverting the application of the said medium substantially tothe corners and edges of said closure aps.

6. A machine for use in combination with a machine provided with meansfor folding flexible parts of .cartons wherein crevices are formedadjacent to said ufolded parts comprising 4a continuously operativecarton conveyor, and mechanical means ofor forcing plugging and sealingmedium into the crevices at the lower corner edges thereof during thecontinuous conveying of said cartons, said means comprising a supplyreservoir for said medium., and means for forcingsaid medium therefrominto the crevices of -said folded parts, comprising an adhesive feedingroller mounted on an axis which extends substantially parallel with theplane of movement of said conveyor.

7.-A machine for use in combination with a machine provided with meansfor folding' flexible parts of cartons wherein crevices are formedadjacent to said folded parts comprising a continuously loperativecarton conveyor, 'and mechanical means for forcing plugging and sealingmedium into the crevices at the lower corner edges thereof during thecontinuous conveying of said cartons, said means comprising a supplyreservoir for said medium, means for forcing said medium therefrom intothe crevices of said folded parts, and means for shielding said mediumfrom uncreviced portions of said cartons.

8. A machine for use in combination with a machine provided with meansfor folding flexible parts of'cartons wherein crevices are formedadjacent to said folded parts comprising a continuously operative cartonlconveyor, mechanical means for forcing plugging and sealing medium intothe crevices at'the lower corner edges theremeans for applying pressureto said cartonsv counter to the direction in which the said medium isforced into the crevices.

9. A machine for use in combinationwith a machine provided with meansfor folding flexible parts of cartons wherein crevices are formedadjacent to said folded"partscomprising a continuously operative cartonconveyor, and mechanical lmeans for forcing plugging and sealing mediuminto the crevices during the continuous conveying of said cartons, saidmeans comprising a supply reservoir for said medium, means for forcingsaid medium therefrom into the crevices of said folded parts, means forshield-l ing said medium from uncreviced portions of said cartons, andmeans 1 for l wiping off excessive applications of the plugging andsealing adhesive.

10. A machine for use in combination with a machine provided with -meansfor folding flexible parts ofcartons wherein crevices are formed adcjacent to said folded parts, comprising mechanical means for forcingsealing and plugging medium into the crevices incident to successivel'conveying movement of cartons one after another, and means forshielding said medium from Auncreviced portions of said cartons.

1l. A machine for use in combination with a carton conveying machineprovided with means lfor foldingl exible parts of cartons during theconveying movement wherein crevices ar'e formed adjacent tol said foldedparts, comprising mechanical means for forcing sealing and pluggingmedium at right angles to their direction of movement into the crevicesat the lower corner edges thereof incident to successive conveyingmovement of cartons one after another, and means for applying pressureto said cartons counter to the direction in which the said medium isforced into the crevices. i

12. A machine for use in combination with a machine provided with meansfor folding flexible parts of cartons wherein crevices are formedadjacent to saidy folded parts, comprising mechanical means for forcingsealing and plugging medium into the crevices incident to successiveconveying movement of cartons one after another, means for shieldingsaid medium from uncreviced portions of said cartons, and means forwiping off excessive applications of the plug-` ging and sealingmedium.. u K

SAMUEL BERGSTEIN.

